function [  ] = Draw_directions( directions )
%DRAW_DIRECTIONS Summary of this function goes here
%   Detailed explanation goes here
A=directions;
[mm,nn] = size(A);
hold on
grid on    
plot3(A(:,1),A(:,2),A(:,3),'o')   
for i = 1:mm   
    X1 = [A(i,1);0];    
    Y1 = [A(i,2);0];    
    Z1 = [A(i,3);0];    
    plot3(X1,Y1,Z1)
end
view(-20,40)
axis equal;
axis on;
xlabel( 'x');
ylabel( 'y');
zlabel( 'z');
box on;
end

